CN213450343U - Intelligent separate injection system for underground composite pipe - Google Patents
Intelligent separate injection system for underground composite pipe Download PDFInfo
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- CN213450343U CN213450343U CN202021937213.4U CN202021937213U CN213450343U CN 213450343 U CN213450343 U CN 213450343U CN 202021937213 U CN202021937213 U CN 202021937213U CN 213450343 U CN213450343 U CN 213450343U
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Abstract
In order to solve the technical problem that the cable is easy to damage when the cable is exposed and put into the well, the utility model provides an intelligent separate injection system for underground composite tubes, which belongs to the field of layered water injection of oil and gas fields, the upper end of a preset cable continuous composite tube is communicated with the lower end inside a wellhead Christmas tree, a hanger is arranged on the wellhead Christmas tree and is connected with the preset cable continuous composite tube through a fitting assembly on the composite tube, the lower end of the preset cable continuous composite tube is communicated with an oil tube through a conversion joint and is connected with a fitting assembly under the composite tube, a plurality of underground separate injection instruments are evenly distributed on the oil tube, the lower end of the oil tube is provided with a plug, the upper side and the lower side of each underground separate injection instrument are respectively provided with a packer, the preset cable in the preset cable continuous composite tube is respectively connected with a ground communication cable and a ground communication cable, a, all downhole dispensing instruments are connected by downhole cables. The utility model discloses need not plus the cable and protect the card, the construction is simple.
Description
Technical Field
The utility model belongs to oil gas field layering water injection field, concretely relates to system is divided to compound pipe intelligence in pit.
Background
In the production process of oil fields, in order to improve the recovery rate of crude oil, a water injection process is mostly adopted to supplement formation energy.
At present, the cable intelligent separate injection system is continuously popularized in domestic oil fields, the system supplies power to an underground intelligent separate injection instrument through a cable, test signals are transmitted through a carrier wave technology, the system comprises parameters such as temperature, pressure, flow and water nozzle opening degree, however, most of the traditional separate injection pipe columns are adopted, the cable is fixed on the outer side of an oil pipe through a cable protection card and then is led out of the ground, communication and control functions are realized, the construction method has a plurality of problems in actual operation, if the cable is exposed out, the cable is easily damaged when the cable is put into a well, the construction is complicated, a cable protection card needs to be added at intervals, in addition, the conventional oil pipe is easily waxed and corroded in the actual use process, the service life of the pipe column is influenced, and impurities generated.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide an intelligent separate injection system for underground composite pipes.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides an intelligent separate injection system for underground composite tubes, which is arranged at the lower end inside a wellhead Christmas tree and comprises a preset cable continuous composite tube, a hanger, a hardware component on the composite tube, a conversion joint, a hardware component under the composite tube, an oil tube, a packer, a separate injection instrument under the well and a ground control system, wherein the upper end of the preset cable continuous composite tube is communicated with the lower end inside the wellhead Christmas tree, the hanger is arranged on the wellhead Christmas tree and is connected with the preset cable continuous composite tube through the hardware component on the composite tube, the lower end of the preset cable continuous composite tube is communicated with the oil tube through the conversion joint, the preset cable continuous composite tube is connected with the conversion joint through the hardware component under the composite tube, a plurality of separate injection instruments under the well are evenly distributed on the oil tube, the lower end of the oil tube is arranged by a screw plug, and the upper side and the lower side of each separate injection instrument are respectively provided with the packer, all the underground separate injection instruments are connected through underground cables, the ground control system is arranged on the ground and is connected with the preset cables penetrating through the hangers in the preset cable continuous composite pipe through ground communication cables, and the underground cables are connected with the preset cables penetrating through the conversion joints in the preset cable continuous composite pipe.
In the above scheme, the gold utensil subassembly includes the gold utensil inner tube on the compound pipe, goes up the gold utensil outer tube, the upper end of going up the gold utensil inner tube, going up the gold utensil outer tube is connected with the hanger, sets up in the clearance between the two and presets the continuous compound pipe of cable and is connected through the hot melt mode with presetting the continuous compound pipe 2 of cable.
In the above scheme, the fitting subassembly under the composite pipe includes fitting inner tube, fitting outer tube down, the lower extreme and the crossover sub of fitting inner tube, fitting outer tube down are connected, set up in the clearance between the two and preset the continuous composite pipe of cable and with preset the continuous composite pipe of cable and be connected through the hot melt mode.
In the above scheme, the preset cable continuous composite pipe comprises an inner lining pipe, a reinforcing layer and an outer protective layer, wherein the reinforcing layer and the outer protective layer are sequentially sleeved outside the inner lining pipe, and at least two preset cables are arranged on the reinforcing layer along the axial direction.
In the scheme, the oil pipe comprises an upper oil pipe short section and a plurality of lower oil pipe short sections, the upper end of the upper oil pipe short section is connected with a preset cable continuous composite pipe through a conversion joint, and the lower end of the upper oil pipe short section is sequentially connected with the plurality of lower oil pipe short sections; the lower end of the upper oil pipe nipple is connected with the first lower oil pipe nipple through a spiral ring.
In the scheme, the preset cable in the preset cable continuous composite pipe penetrates through the outside of the adapter and is connected with the underground cable through the cable connector.
Compared with the prior art, the utility model can detect data and analyze the data in real time, and detect and manage the operation parameters and the operation state of the underground instrument; the cable is preset in the inner wall of the coiled tubing made of the composite material, and a cable protection clamp is not required to be additionally arranged, so that the construction is simple.
Drawings
Fig. 1 is a schematic structural view of a construction pipe column of an intelligent separate injection system for a downhole composite pipe according to an embodiment of the present invention;
fig. 2 is a partial cross-sectional view of a joint of a preset cable composite pipe and a hanger in an intelligent downhole composite pipe separate injection system according to an embodiment of the present invention;
fig. 3 is a partial cross-sectional view of a joint between a preset cable composite pipe and an adapter in an intelligent downhole composite pipe separate injection system according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a preset cable composite tube in an intelligent downhole composite tube separate injection system according to an embodiment of the present invention;
figure 5 is utility model embodiment provides a local cross-sectional view of gold utensil subassembly and oil pipe junction under compound pipe among compound pipe intelligence separate injection system in pit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides an intelligent separate injection system for underground composite pipe, as shown in figures 1-5, the utility model is arranged at the lower end of the interior of a wellhead Christmas tree 1, and comprises a preset cable continuous composite pipe 2, a hanger 3, an upper hardware fitting component 4 of the composite pipe, a conversion joint 5, a lower hardware fitting component 6 of the composite pipe, an oil pipe 7, a packer 8, an underground separate injection instrument 9 and a ground control system 10, wherein the upper end of the preset cable continuous composite pipe 2 is communicated with the lower end of the interior of the wellhead Christmas tree 1, the hanger 3 is arranged on the wellhead Christmas tree 1 and is connected with the preset cable continuous composite pipe 2, the hanger 3 is connected with the preset cable continuous composite pipe 2 through the upper hardware fitting component 4 of the composite pipe, the lower end of the preset cable continuous composite pipe 2 is communicated with the oil pipe 7 through the conversion joint 5, the preset cable continuous composite pipe 2 is connected with the conversion joint 5 through the lower hardware fitting component 6 of the composite pipe, a plurality of underground separate injection instruments 9 are uniformly distributed on the oil pipe 7, the lower end of the oil pipe 7 is provided with a screwed plug 71, the upper side and the lower side of each underground separate injection instrument 9 are respectively provided with a packer 8, the packers 8 are sleeved on the oil pipe 7, the ground control system 10 is arranged on the ground and is connected with a preset cable 21 penetrating through the hanger 3 in the preset cable continuous composite pipe 2 through a ground communication cable 11, all underground separate injection instruments 9 are connected through underground cables 12, and the underground cables 12 are connected with the preset cables 21 penetrating through the conversion joints 5 in the preset cable continuous composite pipe 2, so that the utility model discloses can detect data and data analysis in real time, and detect and manage the operation parameters and the operation state of the underground instruments; the cable is preset in the inner wall of the coiled tubing made of the composite material, and a cable protection clamp is not required to be additionally arranged, so that the construction is simple.
The hardware fitting assembly 4 on the composite pipe comprises an inner hardware fitting pipe 41 and an outer hardware fitting pipe 42, the upper ends of the inner hardware fitting pipe 41 and the outer hardware fitting pipe 42 are connected with the hanger 3, and a preset cable continuous composite pipe 2 is arranged in a gap between the inner hardware fitting pipe 41 and the outer hardware fitting pipe 42 and is connected with the preset cable continuous composite pipe 2 in a hot melting mode.
The hanger 3 is hung on the wellhead Christmas tree 1, the preset cable continuous composite pipe 2 is hot-melted between the upper hardware fitting inner pipe 41 and the upper hardware fitting outer pipe 42, and the preset cable 21 of the preset cable continuous composite pipe 2 is led out from the hanger 3 and is connected into the ground control system 10 through the wellhead Christmas tree 1 and the ground communication cable 11.
The fitting assembly 6 under the composite pipe comprises a fitting inner pipe 61 and a fitting outer pipe 62, the lower ends of the fitting inner pipe 61 and the fitting outer pipe 62 are connected with the adapter 5, and a preset cable continuous composite pipe 2 is arranged in a gap between the fitting inner pipe 61 and the fitting outer pipe 62 and is connected with the preset cable continuous composite pipe 2 in a hot melting mode.
The preset cable continuous composite tube 2 comprises an inner lining tube 22, a reinforcing layer 23 and an outer protective layer 24, wherein the reinforcing layer 23 and the outer protective layer 24 are sequentially sleeved outside the inner lining tube 22, and at least two preset cables 21 are axially arranged on the reinforcing layer 23.
The at least two preset cables 2 are connected with the core wires corresponding to the downhole cables 12 to form a communication loop.
The lining pipe 22 is used for realizing the functions of blocking and resisting internal and external pressure intensity; the preset cable 21 is used for performing power transmission and signal communication functions; the reinforcing layer 23 is wound by fibers and is used for further improving the internal and external pressure resistance of the preset cable continuous composite pipe 2; the outer protective layer 54 is formed by extrusion coating and is used for protecting the preset cable 21 and improving wear resistance.
The lining pipe 22 is made of non-metal composite materials, and the pipe wall is not easy to wax.
The conversion joint 5 is used for converting the preset cable continuous composite tube 2 into a conventional oil tube 7, and leading out a preset cable 21 in the preset cable continuous composite tube 2 for supplying power and communicating with the downhole separate injection instrument 9.
The inner lining pipe 22 is connected with the upper fitting inner pipe 41 through hot melting, and the lower inner lining pipe is connected with the lower fitting inner pipe 61 through hot melting.
The upside outer wall of outer protective layer 24 passes through the hot melt mode with last gold utensil outer tube 42 and is connected, and the downside outer wall passes through the hot melt mode with lower gold utensil outer tube 62 and is connected.
The oil pipe 7 comprises an upper oil pipe nipple 72 and a plurality of lower oil pipe nipples 73, the upper end of the upper oil pipe nipple 72 is connected with the preset cable continuous composite pipe 2 through a conversion joint 5, and the lower end of the upper oil pipe nipple 72 is sequentially connected with the plurality of lower oil pipe nipples 73; the lower end of the upper oil pipe nipple 72 is connected with a first lower oil pipe nipple 73 through a spiral ring 74.
In order to ensure that cables are not damaged in site construction, a movable joint is formed by the upper oil pipe nipple 72, the spiral ring 74 and the first lower oil pipe nipple 73, the spiral ring 74 only needs to be rotated during construction, the upper oil pipe nipple 72 is connected with the first lower oil pipe nipple 73, and the water injection tool section and the preset cable continuous composite pipe 2 can be ensured not to rotate.
The preset cable 21 in the preset cable continuous composite pipe 2 penetrates through the outside of the conversion joint 5 and then is connected with the downhole cable 12 through the cable joint 51.
And a downhole separate injection instrument 9 is arranged on each downhole water injection layer, is separated by a packer 8 from layer to layer and is connected with the adapter 5 through a downhole cable 12.
A preset cable continuous composite pipe 2 is adopted above the water injection section, a hanger 3 on the preset cable continuous composite pipe 2 is connected with an underground Christmas tree 1 at a wellhead, and a preset cable 21 is led out through a wellhead tee joint and is connected with a ground control system 10 through a ground communication cable 11.
The utility model discloses a concrete embodiment in scene as follows:
firstly, connecting tool segments such as a sieve tube, a uniflow valve, a downhole separate injection instrument 9, a packer 8 and the like by adopting a conventional operation mode, and then butting the tool segments with a preset cable continuous composite tube 2 through a conversion joint 5; and then adopting a preset cable continuous composite pipe 2 operation procedure to lower the pipe column, connecting the preset cable continuous composite pipe 2 with a hanger 3 when reaching a wellhead, and sitting on the underground Christmas tree 1, and then installing the underground Christmas tree 1 and making a cable lead. And (5) performing packer 8 pressing and setting after the signal of the underground separate injection instrument 9 is normal.
After all the procedures are finished, the method is the same as a conventional intelligent separate injection system, underground data such as temperature, pressure and flow can be monitored in real time, and the size of the injection amount can be manually or automatically adjusted according to needs.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (6)
1. An intelligent separate injection system of an underground composite pipe is arranged at the lower end in a wellhead Christmas tree and is characterized by comprising a preset cable continuous composite pipe, a hanger, an upper hardware fitting assembly of the composite pipe, a conversion joint, a lower hardware fitting assembly of the composite pipe, an oil pipe, a packer, an underground separate injection instrument and a ground control system, wherein the upper end of the preset cable continuous composite pipe is communicated with the lower end in the wellhead Christmas tree, the hanger is arranged on the wellhead Christmas tree and is connected with the preset cable continuous composite pipe through the upper hardware fitting assembly of the composite pipe, the lower end of the preset cable continuous composite pipe is communicated with the oil pipe through the conversion joint, the preset cable continuous composite pipe and the conversion joint are connected through the lower hardware fitting assembly of the composite pipe, a plurality of underground separate injection instruments are uniformly distributed on the oil pipe, the lower end of the oil pipe is provided with a screw plug, and the packers on the oil pipe are respectively arranged at the upper side and the lower, all the underground separate injection instruments are connected through underground cables, the ground control system is arranged on the ground and is connected with the preset cables penetrating through the hangers in the preset cable continuous composite pipe through ground communication cables, and the underground cables are connected with the preset cables penetrating through the conversion joints in the preset cable continuous composite pipe.
2. The intelligent separate injection system for the underground composite pipe according to claim 1, wherein the hardware assembly on the composite pipe comprises an inner hardware pipe and an outer hardware pipe, the upper ends of the inner hardware pipe and the outer hardware pipe are connected with the hanger, and a preset cable continuous composite pipe is arranged in a gap between the inner hardware pipe and the outer hardware pipe and is connected with the preset cable continuous composite pipe 2 in a hot melting mode.
3. The intelligent downhole composite pipe separate injection system according to claim 2, wherein the composite pipe lower hardware assembly comprises a lower hardware inner pipe and a lower hardware outer pipe, the lower ends of the lower hardware inner pipe and the lower hardware outer pipe are connected with the adapter, and a preset cable continuous composite pipe is arranged in a gap between the lower hardware inner pipe and the lower hardware outer pipe and is connected with the preset cable continuous composite pipe in a hot melting mode.
4. The intelligent downhole composite pipe separate injection system according to any one of claims 1 to 3, wherein the preset cable continuous composite pipe comprises an inner lining pipe, a reinforcing layer and an outer protective layer, the reinforcing layer and the outer protective layer are sequentially sleeved outside the inner lining pipe, and at least two preset cables are axially arranged on the reinforcing layer.
5. The intelligent separate injection system for the downhole composite pipe according to claim 4, wherein the oil pipe comprises an upper oil pipe nipple and a plurality of lower oil pipe nipples, the upper end of the upper oil pipe nipple is connected with the preset cable continuous composite pipe through a crossover sub, and the lower end of the upper oil pipe nipple is sequentially connected with the plurality of lower oil pipe nipples; the lower end of the upper oil pipe nipple is connected with the first lower oil pipe nipple through a spiral ring.
6. The intelligent split-injection system for the downhole composite tube according to claim 5, wherein the preset cable in the preset cable continuous composite tube penetrates through the outside of the adapter and then is connected with the downhole cable through the cable connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021937213.4U CN213450343U (en) | 2020-09-08 | 2020-09-08 | Intelligent separate injection system for underground composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021937213.4U CN213450343U (en) | 2020-09-08 | 2020-09-08 | Intelligent separate injection system for underground composite pipe |
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| CN213450343U true CN213450343U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021937213.4U Active CN213450343U (en) | 2020-09-08 | 2020-09-08 | Intelligent separate injection system for underground composite pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818850A (en) * | 2021-09-18 | 2021-12-21 | 西安洛科电子科技股份有限公司 | Cable intelligent separate injection system capable of being monitored in real time and using method thereof |
| CN115614023A (en) * | 2022-12-16 | 2023-01-17 | 中国石油集团川庆钻探工程有限公司 | Underground visualization system for coiled tubing |
| CN116006139A (en) * | 2023-03-20 | 2023-04-25 | 西安洛科电子科技股份有限公司 | Cable intelligent dispensing system using wireless power transmission |
-
2020
- 2020-09-08 CN CN202021937213.4U patent/CN213450343U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818850A (en) * | 2021-09-18 | 2021-12-21 | 西安洛科电子科技股份有限公司 | Cable intelligent separate injection system capable of being monitored in real time and using method thereof |
| CN115614023A (en) * | 2022-12-16 | 2023-01-17 | 中国石油集团川庆钻探工程有限公司 | Underground visualization system for coiled tubing |
| CN116006139A (en) * | 2023-03-20 | 2023-04-25 | 西安洛科电子科技股份有限公司 | Cable intelligent dispensing system using wireless power transmission |
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